Optical coherence measurements of vortex light fields using optically manipulated micro-apertures

W. M. Lee; K. Dholakia

doi:10.1117/12.734131

12 September 2007 Optical coherence measurements of vortex light fields using optically manipulated micro-apertures

W. M. Lee, K. Dholakia

Proceedings Volume 6644, Optical Trapping and Optical Micromanipulation IV; 66440Y (2007) https://doi.org/10.1117/12.734131
Event: NanoScience + Engineering, 2007, San Diego, California, United States

Abstract

In this paper, we make use of optically controlled phase sampling methods with the use of a dual beam optical trapping system. The dual beam trap enables us to remotely position a single birefringent particle and a second silica microsphere to form a Young's slits type experiments. The controlled rotation of the birefringent particle means that it acts as both a micro-diffuser and diffracting aperture at the same time. By observing the visibility of the far-field interference fringes, we were measure the relative mutual coherence of the optical field between any two selected point sources. This technique provides us with a unique localized sampling method.

Citation Download Citation

W. M. Lee and K. Dholakia "Optical coherence measurements of vortex light fields using optically manipulated micro-apertures", Proc. SPIE 6644, Optical Trapping and Optical Micromanipulation IV, 66440Y (12 September 2007); https://doi.org/10.1117/12.734131

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